Machine for straining paper pulp



May "15, 1923.

J. PARAMOR MACHINE FOR STRAINING PAPER PULP 6 Sheets-SUM; l

Filed Sept. l, 1921 R. O m n N il ,455mg May 15, 1923.

J. PARAMoR MACHINE FOR STRAINING PAPER PULP 6 Sheets-Sheet 2 Filed Sept. l. 1921 F/GJO.

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Filed Sept.` l, 1921 6 Sheets-Sheet 3 R453@ J, PARAMOR MACHINE FOR STRAINING PAPER PULP Filed sem. 1', 1921 ls sheets-sheet 4 May 15,1923.

/N VEN 'ron "May 15, 1923. www

J. PARAMOR MACHINE FOR STRAINING PAPER PULP `Filed sept. 1, 1921 Vs sheets-sheet 5 Mayls, 1923. www.

J. PARAMOR MACHINE FOR STRAINING-PAPER PULP 'Filedsepn 1, 1921 s sheets-shea s Patented .May l5, 1923.

JOHN PARAMOR, 0F WATFORD," ENGLAND, ASEIGNOR OF ONE-HALF T0 THE WATFORD ENGINEERING WORKS., LIMITED, 0F WATFOBD, I-IERTS COUNTY, liiNGrllullND` MACHINE FOB STRAINING PAPER PULP.

Application inea september 1, 1921. serial No. 497,787.

(GRANTED UNDER THE PROVISIONS 0F THE ACT GF MARCH 3, 1921, 41. STAT. L., 1313.)

To all whom t may concern.'

Be it known that I, JOHN Bananen, a subject of the King of Great Britain and Ireland, residing at 6 Kingseld Road, Watford, in the county of I-I'erts, `England, have invented new and useful Improvements in `Machines for Straining Paper Pulp (for which I have filed application in Great Britain on Nov. 13, 1918, Patent No. 134923), of which the following is a specication. i

This invention relates to paper-pulp straining machines of the rotating drum type, the pulp under treatment flowing either inwardly or outwardly. v In straining machines of this type, it is usual to subject.

the drum to vibration in order to facilitate the passage of the pulp through the strain-v ing medium. My present invention consists in improved means for imparting to the drum a vibratory motion of a positive character, the extent of which is moreover capable of variation according to the nature of the pulp under treatment.

In the accompanying drawings are illustrated means for carrying my invention into effect; Fig. 1 being a side elevation of an outward-How strainer of the Wandel type, Fig. 2 an end elevation and Fig. 3 a plan view thereof. Fig. 4 is a side elevation of an inward flow strainer, Fig. an elevation, Fig. 6 a plan view and Fig. 7 a transverse section thereof. Figs. 8, 9, 10 and 11, illustrate certain details of construction hereinafter more particularly referred to.

Referring to Figs. 1, 2 and 3, I mount the drum A on cradle or jog-arms B, one extremity of each of the said arms being supported on a floating fulcrum C furnished by a rigid link D, whilst the other extremity thereof` is in direct engagement with a compound eccentric formed on or attached to a revolving shaft F. Between the jog-arm B and the eccentric E is fitted a second eccentric G, capable of being rotated about the irst one and of being secured relatively thereto in any desired angular position. By changing the angular'position of the adjust-- able eccentric G, upon the eccentrically turned shaft E, the extent of the vibratory motion imparted to the jog-arm B, is varied; the throw of the one eccentric being added to or deducted from that of the other.

The strainer is provided withv a spraypipe H, supported by the column I, an inlet J, for the stuff to be strained, and a knotcatcher L, furnished with suitable brackets forcarrying same. The shaft F is coupled to the eccentrically turned extension thereof, E, by a coupling M; the eccentric shaft being mounted in 'plummer blocks.

F or washing the slits whilst passing the spray-pipe II, the drum A revolves slowly and may be rotated in any convenient Inanner; but I prefer to effect its rotation by means of a pad O, formed of suitable niaterial, such as Ferodo, fixed upon the jog-arm the said pad acting upon the treads P `attached to the respective drumends Q. The drum-ends rest upon the jogarms B in the usual manner, but we make the diameter of the treads P substantially greater than that of the drum-ends Q; in order that the turning moment of the Ferodo pads O may be substantially in excess ot the resistance of the drum-ends Q revolving` in the jog-arms B. The Ferodo pad O is placed in the jog-arm near the driving shaft F, and, owing to the motion of the jog-arm B, there occurs, between the Ferodo pad O and the tread P, a frictional grip sufficient to revolve the drum,

By the use of an eccentric motion for irnparting a vibratory movement to the drum A., it is possible to use a deeper vat B; as the drum niovcs not only vertically but laterally, and is hereby rendered much more edective.

In Figs. 4, 5, 6 and 7, which illustrate the application of my invention to an inwardflow strainer, the drum A is submerged in the vat B, the stuff entering by the inlet S. The application of the eccentric motion, the jog-arms and their suspending links, is as already explained with reference to the outward. How strainer; but the jog-arms B, are provided with straps T which pass over the drum-ends Q, in order to prevent the drum floating in the vat B. The stulf passing through the slits in the drum il pass out of the latter. by way ofthe drum-ends Q, into the trough U, and escape 'thence through the regulating valve V.

The vat R is also fitted with a scumtrough Wto carry away the floating refuse and the like. The drum may be rotated in any convenient manner; but in this instance,

vided with a flexible apron G1 attached .tov

I prefer to operate same b v mea-ns of the ratchet Wheel X, fitted With a paivl Y. Motion is imparted to the pan/'l Y by means of gearing enclosed kin the gearbox Z, eccen- -tric A1, `connecting-rod B1 and arin C1 to the connecting-rod T31. thereb;T torining a Water-tight joint on the mouth-piece of the said. gear-box.

Figs. 870, lO and 11. showv in Greater de tail the construction and arrangement of the duplex veccentric E. G;.l3`1g'. 8 being` Viewy of the sha-ft F and eccentric E, and.

Fig. 9 an end view thereof; Whilst Figs; 10 and 1l are side and end views of the eccentric G'. The portion E of the .shaft F isl turned eccentric, and thereabont `1s mounted y the eccentric and split sleeve G, formed with .lugs traversed by a screw-bolt. By rotating .the eccentric sleeve G upon the eccentric portion E of the shaftF and then tightening vcradle arni `ttor the pinching` bolt.y the viorrneiycan be set in any angular position upon-the latter, so that the eccentricity of the one is either added to or subtracted 'from that oit the latter,

clainiz---r H l. In a paperepulp strainer ot the rotary.Y drum type,`thev combination, With a trunnion-ended straining drinn, of a cradle-erin in directconnection with an eccentric atone end7 suspended or supported by means ot' a rigid link at its oppositefend,r and formed. at an intermediate point With a` bearing' in lwhich the druinetrunnion is carried. sub stantiallT as and forV the purposevset forth.

2.V ln a pulp strainer of the rotary drum type` n straining' drum` e cradle nrrn'sup gortinp; seiddrurn5 a driven shaft and eccentric for oscillatingsaid cradlearm `and means located' between; said eccentric ,fand verving the movement ot said cradle arm. l

In' a puin strainer nl" the4 rotary` drinn type` a straining' drum, a cradle arm for supporting); said drum, a pivotal support for one end ot said cradle arrn. and avvariable throw eccentric for oscillatingI the opposite end of said cradle arm.

Joint PMM/Ion. 

